Automatic feeder for middlings purifiers



(No Model.)

2 Sheets-Sheet 1. 0. E. SAGE. AUTOMATIC FEEDER FOR MIDDLINGS PURIFIERS, ROLLER MILLS, &0.

No. 247,215. Patented Sept. 20,1881.

(No Model.) I 2 Sheets-Sheet 2.

0. E. SAGE.

AUTOMATIC FEEDER EOR MIDDLINGS .PURIFIERS, ROLLER MILLS, &c. No. 247,215. Patented Sept. 20,1881.

::::::: s mwum m. Wuhlnginn. 0.x;

UNITED STATES PATENT OFFICE.

CARLTON E. SAGE, 0F ELKHABT, INDIANA.

AUTOMATIC FEEDER FOR MIDDLINGS-PURIFIERS, ROLLER-MILLS dc.

SPECIFICATION forming part of Letters Patent No. 247,215, dated September 20, 1881,

Application filed February 12, 1881. (No model.)

To all whom it may concern:

Be it known that I, CARLTON E. SAGE, of Elkhart, county of Elkhart, State of Indiana, have invented a new and useful Improvement in Automatic Feeders for Middlings-Purifiers, 8m; and I hereby declare that the following is a full, clear, and exact description of the same.

My invention relates to automatic feeders for middlings-purifiers, smntters, and crushers.

The object of the invention is to render the automatic feed sensitive in its action, and at the same time simple in construction and cheap and durable.

My invention consists of devices and combinations, all as hereinafter described and particularly claimed.

The accompanying drawings show, in Figure 1, a section taken transversely through the hopper and register. Fig. 2 is a side elevation of the hopper and register or valve, the pressure-board being shown in dotted lines.

In these drawings, N represents the hopper, of ordinary shape and provided with an ordinary cylinder, M, at the bottom. A registeraperture is made upon one side at the bottom,

, between the lower edge of the side and the surface of the cylinder, as indicated at M. This aperture is closed by means of a register or valve, A, of a length equal to the length of the aperture, and preferably of a form shown in section of Fig. 1. This register or valve is pivoted on journals at the ends, in bearings B, fixed preferably to the hopper, at the ends thereof. The surface of the said register or valve which bears againstthe edge of and closes the aperture is formed upon a curve struck from the center of the axis, so that whether raised or lowered the valve bears equally against the edge, as shown in Fig. 1. Project ing upward from said valve or register, preferably at the center thereof, is an arm, B, by means of which the valve may be moved on its axis to open or close the aperture. Through a hole in the end of this arm is passed a rod, D, connected to said arm by suitable nuts, as shown at c andf. This rod D passes through the side of the hopper closely, but so as to permit free movement, and is connected within to a hinged board, H, by means of a hinge or joint in the manner shown, so that as the board H is depressed it pushes upon the rod, depresses the arm B, and raises the valve, opening the aperture. A coil-spring, E, of suitable strength, is placed upon the rod 1), (one or more of these rods and springs may be used,) so as to hold up the board H against the pressure of the stock in the hopper. The tension of the spring may be adjusted by means of the nuts which connect the rod to the arm, as heretofore described. The board may extend a distance, as shown in Fig. 2, lengthwise of the hopper; but its length and breadth may be varied within reasonable limits, determinable by the skilled workman. In order to prevent the stock from fillingin under the pressure-board,canvas strips S S are attached, as shown more clearly in Fig. 1, said strips, extending directly from the ends of the pressure-board to the side of the hopper,

being of a shape and width sufficient to permit full upward movement of the pressure-board.

It will be observed that the spring E, when left free to act and properly adjusted, will hold the arm B in an elevated position, and the valve down to close the aperture.

In the operation of the machine the introduction of the stock into the hopper causes it to press upon the board H, and when it has ac-' cumulated in sufficient quantity to overcome the tension of the spring it obviously forces the valve to rise, and thus automatically opens the aperture, and the width of the opening depends upon the weight of the stool: admitted. Thus, the spring being of proper tension, which can be easily determined by the workman, the opening and closing of the aperture is made to depend upon the weight of the stock, and is in exact proportion thereto.

Having thus described my invention, what I claim is-- 1. In an automatic feeder for middlings-purt fiers, smutters, and crushers, the combination, with the pivoted register A, of the pressureboard H, pivoted within the hopper, substantially as described.

2. The combination of the pivoted register or valve A and the pressure-board H, pivoted within the hopper N, of the connecting rod or rods D and set-screw f, and one or more tension-springs, E, arranged to automatically close the register-aperture M, substantially as de- In testimony that I claim the foregoing I [o scribed and shown. have hereunto set my hand this 31st day of 3. In an automatic feeder, the combination, January, 1881. with a pressure-board, H, pivoted within the hopper, of the flexible strips S S, secured to CARLTON SAGE the ends of and at the joint of the pressure- Witnesses:

board to prevent the stock from filling in be- HENRY I. BEARUP,

neath the said board H, substantially for the LIVY CHAMBERLAIN.

purpose specified. 

